import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import {
  IsString,
  IsEmail,
  IsNumber,
  Min,
  IsOptional,
  IsEnum,
  IsArray,
  ValidateNested,
  IsUUID,
  IsDateString,
  MinLength,
  MaxLength,
} from 'class-validator';
import { Type } from 'class-transformer';

/**
 * Create CSV Booking DTO
 *
 * Request body for creating a new CSV-based booking request
 * This is sent by the user after selecting a rate from CSV search results
 */
export class CreateCsvBookingDto {
  @ApiProperty({
    description: 'Carrier/Company name',
    example: 'SSC Consolidation',
  })
  @IsString()
  @MinLength(2)
  @MaxLength(200)
  carrierName: string;

  @ApiProperty({
    description: 'Carrier email address for booking request',
    example: 'bookings@sscconsolidation.com',
  })
  @IsEmail()
  carrierEmail: string;

  @ApiProperty({
    description: 'Origin port code (UN/LOCODE)',
    example: 'NLRTM',
  })
  @IsString()
  @MinLength(5)
  @MaxLength(5)
  origin: string;

  @ApiProperty({
    description: 'Destination port code (UN/LOCODE)',
    example: 'USNYC',
  })
  @IsString()
  @MinLength(5)
  @MaxLength(5)
  destination: string;

  @ApiProperty({
    description: 'Volume in cubic meters (CBM)',
    example: 25.5,
    minimum: 0.01,
  })
  @IsNumber()
  @Min(0.01)
  volumeCBM: number;

  @ApiProperty({
    description: 'Weight in kilograms',
    example: 3500,
    minimum: 1,
  })
  @IsNumber()
  @Min(1)
  weightKG: number;

  @ApiProperty({
    description: 'Number of pallets',
    example: 10,
    minimum: 0,
  })
  @IsNumber()
  @Min(0)
  palletCount: number;

  @ApiProperty({
    description: 'Price in USD',
    example: 1850.5,
    minimum: 0,
  })
  @IsNumber()
  @Min(0)
  priceUSD: number;

  @ApiProperty({
    description: 'Price in EUR',
    example: 1665.45,
    minimum: 0,
  })
  @IsNumber()
  @Min(0)
  priceEUR: number;

  @ApiProperty({
    description: 'Primary currency',
    enum: ['USD', 'EUR'],
    example: 'USD',
  })
  @IsEnum(['USD', 'EUR'])
  primaryCurrency: string;

  @ApiProperty({
    description: 'Transit time in days',
    example: 28,
    minimum: 1,
  })
  @IsNumber()
  @Min(1)
  transitDays: number;

  @ApiProperty({
    description: 'Container type',
    example: 'LCL',
  })
  @IsString()
  @MinLength(2)
  @MaxLength(50)
  containerType: string;

  @ApiPropertyOptional({
    description: 'Additional notes or requirements',
    example: 'Please handle with care - fragile goods',
  })
  @IsOptional()
  @IsString()
  @MaxLength(1000)
  notes?: string;

  // Documents will be handled via file upload interceptor
  // Not included in DTO validation but processed separately
}

/**
 * Document DTO for response
 */
export class CsvBookingDocumentDto {
  @ApiProperty({
    description: 'Document unique ID',
    example: '123e4567-e89b-12d3-a456-426614174000',
  })
  id: string;

  @ApiProperty({
    description: 'Document type',
    enum: [
      'BILL_OF_LADING',
      'PACKING_LIST',
      'COMMERCIAL_INVOICE',
      'CERTIFICATE_OF_ORIGIN',
      'OTHER',
    ],
    example: 'BILL_OF_LADING',
  })
  type: string;

  @ApiProperty({
    description: 'Original file name',
    example: 'bill-of-lading.pdf',
  })
  fileName: string;

  @ApiProperty({
    description: 'File storage path or URL',
    example: '/uploads/documents/123e4567-e89b-12d3-a456-426614174000.pdf',
  })
  filePath: string;

  @ApiProperty({
    description: 'File MIME type',
    example: 'application/pdf',
  })
  mimeType: string;

  @ApiProperty({
    description: 'File size in bytes',
    example: 245678,
  })
  size: number;

  @ApiProperty({
    description: 'Upload timestamp',
    example: '2025-10-23T14:30:00Z',
  })
  uploadedAt: Date;
}

/**
 * CSV Booking Response DTO
 *
 * Response when creating or retrieving a CSV booking
 */
export class CsvBookingResponseDto {
  @ApiProperty({
    description: 'Booking unique ID',
    example: '123e4567-e89b-12d3-a456-426614174000',
  })
  id: string;

  @ApiProperty({
    description: 'User ID who created the booking',
    example: '987fcdeb-51a2-43e8-9c6d-8b9a1c2d3e4f',
  })
  userId: string;

  @ApiProperty({
    description: 'Organization ID',
    example: 'a1234567-0000-4000-8000-000000000001',
  })
  organizationId: string;

  @ApiProperty({
    description: 'Carrier/Company name',
    example: 'SSC Consolidation',
  })
  carrierName: string;

  @ApiProperty({
    description: 'Carrier email address',
    example: 'bookings@sscconsolidation.com',
  })
  carrierEmail: string;

  @ApiProperty({
    description: 'Origin port code',
    example: 'NLRTM',
  })
  origin: string;

  @ApiProperty({
    description: 'Destination port code',
    example: 'USNYC',
  })
  destination: string;

  @ApiProperty({
    description: 'Volume in CBM',
    example: 25.5,
  })
  volumeCBM: number;

  @ApiProperty({
    description: 'Weight in KG',
    example: 3500,
  })
  weightKG: number;

  @ApiProperty({
    description: 'Number of pallets',
    example: 10,
  })
  palletCount: number;

  @ApiProperty({
    description: 'Price in USD',
    example: 1850.5,
  })
  priceUSD: number;

  @ApiProperty({
    description: 'Price in EUR',
    example: 1665.45,
  })
  priceEUR: number;

  @ApiProperty({
    description: 'Primary currency',
    enum: ['USD', 'EUR'],
    example: 'USD',
  })
  primaryCurrency: string;

  @ApiProperty({
    description: 'Transit time in days',
    example: 28,
  })
  transitDays: number;

  @ApiProperty({
    description: 'Container type',
    example: 'LCL',
  })
  containerType: string;

  @ApiProperty({
    description: 'Booking status',
    enum: ['PENDING', 'ACCEPTED', 'REJECTED', 'CANCELLED'],
    example: 'PENDING',
  })
  status: string;

  @ApiProperty({
    description: 'Uploaded documents',
    type: [CsvBookingDocumentDto],
  })
  documents: CsvBookingDocumentDto[];

  @ApiProperty({
    description: 'Confirmation token for accept/reject actions',
    example: 'abc123-def456-ghi789',
  })
  confirmationToken: string;

  @ApiProperty({
    description: 'Booking request timestamp',
    example: '2025-10-23T14:30:00Z',
  })
  requestedAt: Date;

  @ApiProperty({
    description: 'Response timestamp (when accepted/rejected)',
    example: '2025-10-24T09:15:00Z',
    nullable: true,
  })
  respondedAt: Date | null;

  @ApiPropertyOptional({
    description: 'Additional notes',
    example: 'Please handle with care',
  })
  notes?: string;

  @ApiPropertyOptional({
    description: 'Rejection reason (if rejected)',
    example: 'No capacity available for requested dates',
  })
  rejectionReason?: string;

  @ApiProperty({
    description: 'Route description (origin → destination)',
    example: 'NLRTM → USNYC',
  })
  routeDescription: string;

  @ApiProperty({
    description: 'Whether the booking is expired (7+ days pending)',
    example: false,
  })
  isExpired: boolean;

  @ApiProperty({
    description: 'Price in the primary currency',
    example: 1850.5,
  })
  price: number;
}

/**
 * Update CSV Booking Status DTO
 *
 * Request body for accepting/rejecting a booking
 */
export class UpdateCsvBookingStatusDto {
  @ApiPropertyOptional({
    description: 'Rejection reason (required when rejecting)',
    example: 'No capacity available',
  })
  @IsOptional()
  @IsString()
  @MaxLength(500)
  rejectionReason?: string;
}

/**
 * CSV Booking List Response DTO
 *
 * Paginated list of bookings
 */
export class CsvBookingListResponseDto {
  @ApiProperty({
    description: 'Array of bookings',
    type: [CsvBookingResponseDto],
  })
  bookings: CsvBookingResponseDto[];

  @ApiProperty({
    description: 'Total number of bookings',
    example: 42,
  })
  total: number;

  @ApiProperty({
    description: 'Current page number',
    example: 1,
  })
  page: number;

  @ApiProperty({
    description: 'Number of items per page',
    example: 10,
  })
  limit: number;

  @ApiProperty({
    description: 'Total number of pages',
    example: 5,
  })
  totalPages: number;
}

/**
 * CSV Booking Statistics DTO
 *
 * Statistics for user's or organization's bookings
 */
export class CsvBookingStatsDto {
  @ApiProperty({
    description: 'Number of pending bookings',
    example: 5,
  })
  pending: number;

  @ApiProperty({
    description: 'Number of accepted bookings',
    example: 12,
  })
  accepted: number;

  @ApiProperty({
    description: 'Number of rejected bookings',
    example: 2,
  })
  rejected: number;

  @ApiProperty({
    description: 'Number of cancelled bookings',
    example: 1,
  })
  cancelled: number;

  @ApiProperty({
    description: 'Total number of bookings',
    example: 20,
  })
  total: number;
}